EP1633965A1 - Verfahren und vorrichtung zum betreiben eines verbrennungsmotors - Google Patents
Verfahren und vorrichtung zum betreiben eines verbrennungsmotorsInfo
- Publication number
- EP1633965A1 EP1633965A1 EP04719460A EP04719460A EP1633965A1 EP 1633965 A1 EP1633965 A1 EP 1633965A1 EP 04719460 A EP04719460 A EP 04719460A EP 04719460 A EP04719460 A EP 04719460A EP 1633965 A1 EP1633965 A1 EP 1633965A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- internal combustion
- combustion engine
- release
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/16—Introducing closed-loop corrections for idling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/007—Electric control of rotation speed controlling fuel supply
- F02D31/009—Electric control of rotation speed controlling fuel supply for maximum speed control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the invention relates to methods for operating an internal combustion engine in pushing operation, comprising the steps of: enabling monitoring of a control signal for a power actuator of the internal combustion engine when predetermined release conditions are met, which include exceeding an enable speed of the internal combustion engine, after the release, comparing a drive signal for the Power actuator of the internal combustion engine with a threshold, and
- the invention further relates to a control device for controlling the method.
- a pushing operation of an internal combustion engine is understood below to mean an operation in which the internal combustion engine does not emit any torque, but rather is itself driven by external influences.
- Push operation occurs, for example, when braking or when driving down a motor vehicle when the driver is not requesting torque.
- the transition to push operation can be detected, for example, by a driver request transmitter, for example an accelerator pedal transmitter.
- Air actuators for example a throttle valve or variable valve control, as well as fuel actuators, typically an injection system, are suitable as power actuators.
- the power stage of the power actuator can be deactivated as an error response.
- DE 33 01 742 specified above relates to an electronic diesel control system for a diesel engine (EDC).
- EDC diesel engine
- the present invention also relates to EDC systems, but is not limited to them. Rather, it can also be used in gasoline engines with E-gas (electronically controlled throttle valve) or in a variable valve control that serves as a power actuator.
- control signal Insofar as a control signal is mentioned in the following, this term is intended to cover both a pulse width with which an injection valve is controlled to open and a control signal of a power actuator to be measured by air.
- Control signal duration compared to a fixed threshold.
- the value of the threshold determines the
- Torque requirements of an idle control can be considered as an error.
- Release speed is quite high specific to the internal combustion engine and usually corresponds to the upper limit speed of the idle control.
- a typical value of the limit speed is approx. 2500 min "1.
- the object of the invention is to provide a method which enables the quality of the monitoring to be increased by expanding the monitored operating range of the internal combustion engine without sacrificing the quality of the distinction between faulty and non-faulty provision of torque.
- This object is achieved both in a method and in a control device of the type mentioned at the outset solved that the release speed is varied as a function of the intervention of an idle control in the formation of the drive signal, or in that the control device varies the release speed as a function of the intervention of an idle control in the formation of the drive signal.
- the object is achieved completely by these features.
- the invention includes the torque resulting from the idling control in the release of the monitoring. If the idle control provides the reason for a torque increase that does not match the driver's request, the monitoring is only released above an upper speed. In cases where the idle control does not request and / or generate torque, the monitoring is already released at a lower release speed. The time period over which the idle control provides the reason for a torque increase that does not match the driver's request, the monitoring is only released above an upper speed. In cases where the idle control does not request and / or generate torque, the monitoring is already released at a lower release speed. The time period over which the
- the release speed is selected from at least two values.
- This configuration is easy to implement and already results in a considerable increase in monitoring quality.
- the highest of the at least two possible values is independent of the intervention of the idle control.
- This embodiment has the advantage that, for example, errors in the idle control itself can also be detected, so that an incorrectly large intervention by the idle control cannot block the release of the monitoring.
- This design takes into account that the interventions of the idle speed control at low speeds take place frequently and can involve large torque requirements, so that a release of the monitoring at low speeds, such as below about 1500 min -1, does not make sense.
- This configuration is also very easy to implement and already results in a considerable increase in monitoring quality.
- a preferred alternative provides that at least three values for the release speed are possible, one of the at least two lower values being selected when the intervention of the idle control falls below a threshold value which is individually assigned to one of the lower values.
- the release speed is selected by accessing a characteristic curve that is addressed with the intervention of the idle control.
- intervention of the idle control in the control loop of the idle control is recorded before or after the formation of a manipulated variable.
- the intervention of the idle control can be estimated from signals at different points in the circuit.
- the manipulated variable itself or a control deviation can be used. It is also irrelevant whether the intervention is determined on a torque basis or on a quantity basis, since the two variables are linked to one another via the engine efficiency.
- the calculations in the control unit are generally made in torque units, depending on the physical relationship (Desired driver torque, torque limitation, ...) or quantity unit or control signal unit (smoke limitation, quantity compensation control). The connection is made via an engine efficiency map. The considerations disclosed for torques in the present application are therefore to be considered in relation to quantities
- control device to control the pushing operation of an internal combustion engine, the control signal being an injection pulse width for a fuel injection valve or a control signal for an actuator to be measured for air.
- F g. 1 schematically shows an internal combustion engine
- Actuators sensors and a control unit
- FIG. 2 shows an exemplary embodiment of a method according to the invention and a control device according to the invention in the form of Function Block;
- Fig. 3 speed ranges in which the monitoring is active.
- the number 10 in FIG. 1 denotes the overall view of an internal combustion engine, shown in a highly schematic manner, with at least one combustion chamber 12.
- a filling of the combustion chamber 12 is exchanged via an inlet valve 14 and an outlet valve 16.
- Fuel is metered into an air filling of the combustion chamber 12 via an injection valve 18, the timing of the metering and the metered quantity being controlled by a control device 20.
- the injection valve 18 is used as a power actuator.
- the metered amount essentially determines the torque generated by the internal combustion engine 10.
- the control of the power actuator takes place, among other things, as a function of one
- Driver request which is detected by an accelerator pedal 24 via an accelerator pedal 22 and is forwarded to the control device 20.
- Such a way of power control is for one
- Typical diesel engine Comparable power control via the amount of metered fuel also takes place in a gasoline engine with direct injection when operating with stratified combustion chamber filling.
- the injection triggers the combustion
- the ignition of the combustion chamber fill is externally ignited, for example by a spark plug.
- a gasoline engine with direct injection which is operated in homogeneous operation, that is to say with a homogeneous mixture distribution in combustion chamber 12, the setting of Desired torque depending on the driver's request about the amount of the combustion chamber 12.
- the amount of combustion chamber filling can be set via a throttle valve 26, which is actuated in a controlled manner by the control device 20 by a throttle valve actuator 28.
- the throttle valve 26 with the throttle valve actuator 28 serves as a power actuator.
- the amount of filling of the combustion chamber 12 can also take place via variable actuation of the intake valve 14 by an intake valve actuator 30, which is also controlled by the control device 20.
- the internal combustion engine 10 also has a speed sensor system 32, which can consist, for example, of a sensor wheel 34 with ferromagnetic markings 36 and an inductive sensor 38.
- a certain throttle valve opening angle would correspond to a control duration of an injection valve 18, since both sizes essentially determine the torque of the internal combustion engine 10 in their respective technical environment.
- a variable valve control this would be the case
- Control duration or the valve lift the appropriate criterion.
- FIG. 2 shows an exemplary embodiment of a method according to the invention and a control device according to the invention in the form of functional blocks.
- the control device 20 is functionally divided by a line 40 into a first, upper level 42 and a second, lower level 44. This subdivision corresponds to the program structure of the engine control program, which in the
- Control unit 20 is processed. Signals from various sensors, in particular signals from accelerator pedal sensor 24 and inductive sensor 38, are fed to control unit 20 on the input side. In the first level 42, control signals for at least one of the signals are generated from these signals
- Power actuators 18, 28 or 30 are formed, with which the control device 20 is connected on the output side.
- the second program level 44 is used to monitor the first level. Both levels are functionally linked. For example, the second level 44 receives a power-determining signal from the chain for shaping the control signal for the power actuators 18, 28 or 30 in level 1. If checking this signal in level 2 reveals a safety-critical implausibility, level 2 can Intervene at level 1, for example to prevent or reduce a safety-critical torque increase of the internal combustion engine 10.
- a desired torque or quantity is first calculated in a block 46 on the basis of the driver's request (accelerator pedal sensor 24) and the speed (inductive sensor 38) of the internal combustion engine 10.
- the concept of the desired quantity refers to the quantity of the performance-determining working medium of the internal combustion engine 10. This can be an amount of fuel to be injected, which is metered via fuel metering valves 18. As an alternative or in addition, this desired quantity can also relate to the filling of the combustion chamber 12 with air or a fuel / air mixture. The filling of the
- Combustion chamber 12 is set by correspondingly controlling throttle valve actuator 28 or intake valve actuator 30.
- the desired torque and the desired quantity are linked with each other via the engine efficiency and can therefore be used as an alternative.
- the intervention of an idle control 50 which was formed on the basis of the speed signal of the inductive sensor 38, is superimposed on the desired torque / the desired amount thus formed.
- the linkage can be additive or multiplicative; via a normally closed first switch 52, the result of the linkage in block 48 is transferred to a block 54, which represents the final control signal shaping and output stage in control unit 20.
- the output signal of block 54 is used to control at least one of the power-determining actuators 18, 28 and / or 30 from FIG. 1.
- This function of control signal formation and control signal formation from the first program level 42 in the control device 20 is checked by the second program level 4-4.
- the result of the link in block 48 of level 1 is compared in comparison block 56 with an admissible or plausible value S_0, which is provided by block 60.
- block 60 can, for example, also be supplied with the signals from accelerator pedal sensor 24 and speed sensor system 32, so that block 60 uses this to simulate the functions of blocks 46, 48 and 50 from the first level and add an offset to the value S_0 for a highly permissible quantity signal or Torque request signal can form. Is that about the Block 58 present signal actually formed in the first level greater than the highest permissible value S_0, block 56 opens the switch 52 in the first level.
- Block 54 in the first level then outputs substitute values to the power actuators 18, 28 and / or 30 to prevent an undesirable torque increase or an undesirable provision of the torque.
- deactivation of the block 54 is also possible, so that no control signal is output.
- the monitoring of the first level 42 is enabled by the second level 44 by closing the second switch 58.
- the higher release speed n_2 can, for example, correspond to the upper limit speed below which the idle speed control 50 is active in the first level 42. Is have the actual engine speed is greater than this speed n_2 which may be min "1, for example 2300, so 50 provides the idle control under normal circumstances no torque enhancing engagement of the link 48 in the first plane 42.
- the formation of the control signals for the power actuators 18 , 28 and / or 30 are therefore no interventions of the idle control 50 superimposed, which could interfere with monitoring of the control signal formation in the first level 42.
- the comparison block 72 outputs, for example, a logical 1, which is led via the OR gate 76 to a second input 66 of the already mentioned logical AND gate 62.
- a signal is a first input 64 of the link 62
- the signal of the comparison block 68 is logic 1 when the driver's torque request is below a threshold S_l, which is provided by the block 70.
- the driver request signal is provided by the accelerator pedal sensor 24.
- Block 68 outputs a logical 1, for example, if the accelerator pedal angle is 0. If the engine speed is simultaneously greater than n_2, block 62 releases the monitoring by closing the second switch 58.
- Idle control 50 in the formation of the drive signal in blocks 46, 48 and 54 of the first level 42 is variable.
- the output signal of the idle control 50 is also transferred to the second level 44 in parallel with its further processing in the first level 42.
- the second level 44 it is fed to a comparison block 82, to which a threshold value S_2 is fed in parallel.
- S_2 corresponds to a threshold value for the intervention of the idle control 50, which separates values that are still tolerable for release from values that are no longer tolerable. If the intervention of the idle control 50 is, for example, relatively small, i.e. smaller than the threshold value S_2, the comparison block 82 outputs a logical 1 to a downstream AND logic operation 84.
- This AND logic operation 84 is fed in parallel with the output signal of a comparison block 78 in which the The speed of the internal combustion engine 10, that is to say the signal from the inductive sensor 38, is compared with a lower release speed n 1.
- the value n 1 can For example, the upper limit speed of a pre-control of the idle control 50, for example approx. 1500 min "1 , corresponds.
- the value n_l is provided by block 80 in FIG. 2.
- Block 80 can output a fixed value as described.
- block 80 represent a characteristic curve, to which, in contrast to the illustration in FIG. 2, the intervention of the idle controller 50 is supplied and which outputs a value n_1 that is dependent on this intervention continuously or in steps.
- Intervention of the idle control 50 allows monitoring of the control signal formation in the first level 42, in which the output signal of the comparison block 84 closes the switch 58 via the OR links 76 and 62.
- FIG. 3 illustrates the effect of the invention for representing speed ranges in which a release according to the prior art or according to the invention shown here is possible.
- the value 0 corresponds to a block and the value 1 corresponds to a release of the monitoring.
- the solid line 88 in FIG. 3 represents the prior art. According to the prior art, the monitoring was only released above a comparatively high speed n_2.
- the solid line 90 illustrates how within the scope of the invention a release is already possible at a lower speed n_l. As shown above, the prerequisite is that in the speed range between n_l and n_2, which is now also accessible to monitoring, there is only a comparatively small intervention by the idle control 50.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10317649A DE10317649A1 (de) | 2003-04-17 | 2003-04-17 | Verfahren und Vorrichtung zum Betreiben eines Verbrennungsmotors im Schiebebetrieb |
PCT/EP2004/050291 WO2004092565A1 (de) | 2003-04-17 | 2004-03-11 | Verfahren und vorrichtung zum betreiben eines verbrennungsmotors |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1633965A1 true EP1633965A1 (de) | 2006-03-15 |
EP1633965B1 EP1633965B1 (de) | 2010-03-03 |
Family
ID=33103474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04719460A Expired - Lifetime EP1633965B1 (de) | 2003-04-17 | 2004-03-11 | Verfahren und vorrichtung zum betreiben eines verbrennungsmotors |
Country Status (7)
Country | Link |
---|---|
US (1) | US7263977B2 (de) |
EP (1) | EP1633965B1 (de) |
JP (1) | JP5038711B2 (de) |
CN (1) | CN100458130C (de) |
AT (1) | ATE459795T1 (de) |
DE (2) | DE10317649A1 (de) |
WO (1) | WO2004092565A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1415987B1 (de) | 2000-10-20 | 2007-02-28 | Eisai R&D Management Co., Ltd. | Stickstoff-enthaltende aromatische ringverbindungen zur behandlung von tumorerkrankungen |
DE102006039706B4 (de) | 2006-08-24 | 2018-05-30 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine im Schiebebetrieb |
DE102011080859A1 (de) * | 2011-08-11 | 2013-02-14 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Überwachung eines Steuergeräts zum Betreiben eines Motorsystems |
DE102012211585A1 (de) * | 2012-07-04 | 2014-01-09 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Fahrzeuges während eines Ausrollens |
DE102016221285B3 (de) * | 2016-10-28 | 2018-05-03 | Robert Bosch Gmbh | Verfahren zur Schubüberwachung eines verbrennungsmotorischen Antriebs in einem Kraftfahrzeug |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4289222A (en) * | 1979-09-27 | 1981-09-15 | Bird-Johnson Company | Engine-clutch control interlock system |
DE3301742A1 (de) * | 1983-01-20 | 1984-07-26 | Robert Bosch Gmbh, 7000 Stuttgart | Sicherheitseinrichtung fuer eine brennkraftmaschine mit selbstzuendung |
IT1196693B (it) * | 1984-03-26 | 1988-11-25 | Fiat Auto Spa | Dispositivo stop start per il controllo del funzionamento del motore a combustione interna di un autoveicolo provvisto di cambio automatico |
JPH02191841A (ja) * | 1989-01-20 | 1990-07-27 | Fuji Heavy Ind Ltd | エンジンのアイドル回転数調整装置 |
JPH11324776A (ja) * | 1998-05-20 | 1999-11-26 | Daihatsu Motor Co Ltd | 内燃機関のアイドル回転制御方法 |
DE19836845B4 (de) * | 1998-08-14 | 2009-04-09 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung einer Antriebseinheit eines Kraftfahrzeugs |
DE19947052C1 (de) * | 1999-09-30 | 2001-05-03 | Siemens Ag | Verfahren zum Überwachen einer Steuereinrichtung für eine Brennkraftmaschine |
AUPQ489899A0 (en) * | 1999-12-24 | 2000-02-03 | Orbital Engine Company (Australia) Proprietary Limited | Engine idle speed control |
-
2003
- 2003-04-17 DE DE10317649A patent/DE10317649A1/de not_active Withdrawn
-
2004
- 2004-03-11 CN CNB2004800006799A patent/CN100458130C/zh not_active Expired - Fee Related
- 2004-03-11 US US10/552,860 patent/US7263977B2/en not_active Expired - Lifetime
- 2004-03-11 EP EP04719460A patent/EP1633965B1/de not_active Expired - Lifetime
- 2004-03-11 WO PCT/EP2004/050291 patent/WO2004092565A1/de active Application Filing
- 2004-03-11 AT AT04719460T patent/ATE459795T1/de not_active IP Right Cessation
- 2004-03-11 JP JP2006505461A patent/JP5038711B2/ja not_active Expired - Fee Related
- 2004-03-11 DE DE502004010854T patent/DE502004010854D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2004092565A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7263977B2 (en) | 2007-09-04 |
JP2007526956A (ja) | 2007-09-20 |
DE10317649A1 (de) | 2004-11-04 |
WO2004092565A1 (de) | 2004-10-28 |
CN100458130C (zh) | 2009-02-04 |
ATE459795T1 (de) | 2010-03-15 |
JP5038711B2 (ja) | 2012-10-03 |
EP1633965B1 (de) | 2010-03-03 |
CN1697920A (zh) | 2005-11-16 |
DE502004010854D1 (de) | 2010-04-15 |
US20070000477A1 (en) | 2007-01-04 |
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